Central diabetes insipidus happens when damage to a person's hypothalamus or pituitary gland causes disruptions in the normal production, storage, and release of vasopressin. 1  The disruption of vasopressin causes the kidneys to remove too much fluid from the body, leading to an increase in urination.
Foreign national A foreign national is a person who is not a citizen of the host country in which he or she is residing or temporarily sojourning. For example, a foreign national in Canada is someone who is neither a Canadian citizen nor a permanent resident of Canada. However, in the European Union, a foreign national is a third country national, i.e. someone who is not a citizen of any of the member states of the European Union.
British National (Overseas) British National (Overseas), commonly known as BN(O), is one of the major classes of British nationality under British nationality law. Holders of this nationality are British nationals and Commonwealth citizens, but not British citizens. The nationality itself does not grant right of abode anywhere in the world, including United Kingdom or Hong Kong, but most BN(O)s possess either right of abode or right to land in Hong Kong.